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Radius Query — Find Nearby Cities, ZCTAs & Points

Find point records within a great-circle radius. Query real city or Census reference data, or choose your own GeoJSON/KML point file.

Input & limits

A selected-country Natural Earth city reference, national Census ZCTA representative points, or a local point dataset.

What you download

Sorted nearby records with distances as GeoJSON and CSV, and a circle boundary for further mapping.

How to use

  1. Choose cities, ZCTA points or a local point file.
  2. Pick a map center or enter latitude/longitude, then choose radius and units.
  3. Inspect matched and skipped counts, export the table and map, or continue processing.

Frequently asked questions

Does this find every town or postal address?

No. Natural Earth includes major cities and selected populated places. Census ZCTA points represent statistical areas, not delivery routes, addresses or every postal ZIP.

Does the circle contain the listed population?

A reference-point match is not a population-within-circle estimate. Population belongs to the whole source area; partial coverage is not apportioned.

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